Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Euchaetidae ( Famille )
            Paraeuchaeta ( Genre )
Paraeuchaeta parvula  (Park, 1978)   (F,M)
Syn.: Euchaeta parvula Park, 1978 (p.256, figs.F,M); Ward & Wood, 1988 (p.45, tab.1)
Ref.:
Bradford & al., 1983 (p.46, figs.F,M); Park, 1994 (p.321); 1995 (p.38, Rem.F, M, figs.F,M); Bradford-Grieve & al., 1999 (p.880, 926, fig.F); Laakmann & al., 2019 (p.330, fig. 4 phylogenetic relationships)
Espèce Paraeuchaeta parvula - Planche 1 de figures morphologiquesissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1995, 29. [p.134, Fig.24].
Female: a, forehead (left side); b, urosome (left); c, genital somite (left); d, outer lobe of Mx1; e, P1 (anterior); f, exopod of P2 (anterior).
Nota: Similar in habitus to P. barbata but rostrum very small, pointing more or less downward.
Genital somite more slender. Laterally, genital flange with strongly bulging ventral margin. Posterior margin of genital prominence nearly straight or slightly bulging and sloping about 35° with respect to long body axis. No tubercular outgrowth on genital somite.
Cephalosomal appendages including Mx1 and swimming legs similar to those of P. barbata except that in P1 exopod, outer spine of 2nd segment reaching base of following outer spine, which is nearly 1/2 length of terminal spine of 3rd segment, and in P2 exopod, incision separating 2nd marginal lobe of 3rd segment relatively shallow.

Male: g, forehead (left); h, distal exopodal segments of left P5 (larteral).


Espèce Paraeuchaeta parvula - Planche 2 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Washington, 1978, 27. [p.257, Fig.102]. As Euchaeta parvula.
Female: A, habitus (lateral); B, forehead (lateral); C, distal end of metasome and genital segment (lateral); D, posterior part of metasome and urosome (dorsal); E, genital segment (ventral); F, P1; G, P2. P1-2: legs (anterior).

Nota from Bradford & al. (1983, p.46): - P1 exopod female: Aa minute; Bb ± BC; Cc = 2 BC.
- P2 exopod female: Aa = AB + 1/2 Bb; Bb = 1/2 BC; Cc = 2/3 CD; Dd = 1/4 CD. (see code of lengths outer spines in the Genus' figure, or in Paraeuchaeta sp. A).


Espèce Paraeuchaeta parvula - Planche 3 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Washington, 1978, 27. [p.258, Fig.103]. As Euchaeta parvula.
Male: A, habitus (lateral); B, forehead (lateral); C, P1; D, P2; E, P5; F, G, distal part of exopod of left P5 (anterior, and medial, respectively). P1-5: legs (anterior).

Nota from Bradford & al. (1973, p.46): - P1 exopod male: Aa minute; Bb = 1/4 BC; Cc = 2/3 BC.
P2 exopod male: Aa = 1/4 AB; Bb = 1/3 BC; Cc = 1/3 CD; Dd = 1/4 CD. (see code of lengths outer spines in the Genus' figure, or in Paraeuchaeta sp. A).


Espèce Paraeuchaeta parvula - Planche 4 de figures morphologiquesissued from : J.M. Bradford-Grieve, E.L. Markhaseva & C.E.F. Rocha & B. Abiahy in South Atlantic Zooplankton, Edit. D. Boltovskoy. 1999, Vol.2. Copepoda. [p.1016, Fig. 7.160].
Female: Mx1 (schematic diagram). Li = inner lobe; Le = outer lobe.
Nota: In lateral view rostrum very small.


Espèce Paraeuchaeta parvula - Planche 5 de figures morphologiquesParaeuchaeta parvula Female:
1 - See key to species Groups and independent species of Paraeuchaeta (p.30): malayensis species Group.
2 - Outer spine of 2nd exopodal segment (or the 2nd of the first 2 exopodal segments forming a proximal, compound segment) of P1 normally developed (Fig.24-e).
3 - Outer lobe of Mx1 with 5 long setae (Fig.24-d).
4 - Laterally, genital prominence low with more or less convex genital flanges (Fig.24-c).
5 - Laterally, rostrum very small (Fig.24-a).

Ref. compl.:
Razouls & al., 2000 (p.343, tab. 3, Appendix); Park & Ferrari, 2009 (p.143, Table 3, 8, Appendix 1, biogeography)
NZ: 4

Carte de distribution de Paraeuchaeta parvula par zones géographiques
Espèce Paraeuchaeta parvula - Carte de distribution 3issued from : T. Park in Biology of the Antarctic Seas VII. Antarctic Res. Ser., 1978, 27 (4). [p.259, Fig.104].
Occurrence of Euchaeta ( = Paraeuchaeta ) parvula.
Closed circles: stations where the species was found; A.C: Antarctic Convergence.
Loc:
Antarct. (SW & SE Atlant., Weddell Sea, Indian, SW & SE Pacif.), sub-Antarct. (Indian, SE Pacif., S Atlant., S Indian
N: 5
Lg.:
(3) F: 8,5-7,5; M: 6,8-6,4; (20) F: 8,25-7,25; M: 6,91-6,08; {F: 7,25-8,50; M: 6,08-6,91}
Rem.: bathypélagique.
Sampling depth (Antarct., sub-Antarct.) : 0-1000+ m.
Voir aussi les remarques en anglais
Dernière mise à jour : 02/04/2019

 Toute utilisation de ce site pour une publication sera mentionnée avec la référence suivante :

Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2020. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 03 décembre 2020]

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